Metadata expressed in a single format with a header and optional "about"
data which is descriptive of the metadata (such as rights or provenance
statements).
Get the metadata portion of the record. This must be an xml chunk in
which the W3C schema is identified by the root element's
xsi:schemaLocation attribute. If getHeader().isAvailable() is false, this
may be null.
Get the 'about' portions of the record. There will be zero or more items
in the resulting Set. These are descriptors of the metadata. These must
be xml chunks in which the W3C schema is identified by the root element's
xsi:schemaLocation attribute. If getHeader().isAvailable() is false, this
may be null.